MinT - Best Known (178−108, 178, s)-Nets in Base 4

Best Known (178−108, 178, s)-Nets in Base 4

(178−108, 178, 66)-Net over F₄ — Constructive and digital

Digital (70, 178, 66)-net over F₄, using

t-expansion [i] based on digital (49, 178, 66)-net over F₄, using
- net from sequence [i] based on digital (49, 65)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 49 and N(F) ≥ 66, using
    - T₆ from the second tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(178−108, 178, 105)-Net over F₄ — Digital

Digital (70, 178, 105)-net over F₄, using

net from sequence [i] based on digital (70, 104)-sequence over F₄, using
- Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 70 and N(F) ≥ 105, using
  - Drinfeld modules of rank 1 [i]

(178−108, 178, 631)-Net in Base 4 — Upper bound on s

There is no (70, 178, 632)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 157796 448949 918369 285554 999005 892303 248178 644375 151939 795295 235936 088110 685905 125660 742594 961103 523185 322509 > 4¹⁷⁸ [i]